Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 45/90 of 40/45?"
4590 × 4045 is 49.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 45/90×80/45 45/90×40/90
© everydaycalculation.com